J.R. S.

09/21/22

How to find vapor pressure?

Water has a vapor pressure of 18.0 torr and a density of 0.997 g/mL. Methanol (CH₃OH) has a vapor pressure of 126.8 torr and a density of 0.791 g/mL. Assuming a mixture of the two behaved ideally... more

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Chemistry

09/21/22

chemistry molarity

What is the % water inmanganese(II) chloride tetrahydrate?

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Chemistry

09/21/22

chemistry molarity

A 10.350 g sample of an unknown hydrate of cobalt(II) bromide is heated until all the water of hydration is removed. The CoBr2 that remains has a mass of 8.3000 g. How many moles of CoBr2 are in... more

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Chemistry

09/21/22

Using the data in the table, determine the rate constant of the reaction

Using the data in the table, determine the rate constant of the reaction and select the appropriate units.A+2B⟶C+D [A] (M) [B] (M) RATE... more

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Chemistry

09/20/22

Calculate the wavelength after it undergoes transition

Calculate the wavelength, in nanometers ,of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level n=7 to the level n=2

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Chemistry

09/20/22

The activation energy for the gas phase isomerization of methyl cis-cinnamate is__________kJ.

For the gas phase isomerization of methyl cis-cinnamate,cis-C6H5CH = CHCOOCH3 --> trans-C6H5CH = CHCOOCH3the rate constant at 648 K is 3.29 x 10-4s-1 and the rate constant at 687 K is 2.06 x... more

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Chemistry

09/20/22

One possible mechanism for the gas phase reaction of hydrogen with nitrogen monoxide is:

One possible mechanism for the gas phase reaction of hydrogen with nitrogen monoxide is:step 1 slow: H2(g) + 2 NO(g) N2O(g) + H2O(g)step 2 fast: N2O(g) + H2(g) N2(g) + H2O(g)(1) What is the... more

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Chemistry

09/20/22

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:..... step 1 ..... fast: ...... I2 2 I..... step 2 ..... slow: .... H2 + 2 I 2 HI(1) What is the equation for... more

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Chemistry

09/20/22

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:.....step 1.....fast:......I2 2 I.....step 2.....slow:....H2 + 2 I 2 HI(1) What is the equation for the overall... more

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Chemistry

09/20/22

The pressure inside a container is 812 Torr at a temperature of 75 °C. What would the pressure be at 57 °C?

Please show work!

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Chemistry

09/20/22

I'm Stuck. Please Help. (Dimensional Analysis)

Convert each of the following:A. 376 mL to L: B. 5.910 g to kg: C. 1290000000 mm to km: D. 1.2 x 1024 cm to m:E. 9.22 x 10(-19) kL to mL:F. 10.0 kg to mg: Use the equation d=r*t for the... more

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Chemistry

09/20/22

what is heavier a 0.3000 kg rock or a 300.0g rock

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Chemistry

09/20/22

Provided the following experimental data, determine the correct rate law:

Provided the following experimental data, determine the correct rate law: Rate (mol / L-s) A (mol/L) B (mol/L) 2.87 * 10-4 0.012 0.0207 7.16 * 10-3 0.060 0.0621 2.87 * 10-4 0.012... more

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Chemistry

09/20/22

A chemical reaction in the form 2 A --> 3 B, is observed to have the rate of chemical A decrease at 0.15 mol/L-s. How would the rate of this reaction be reported in mol/L-s?

A chemical reaction in the form 2 A --> 3 B, is observed to have the rate of chemical A decrease at 0.15 mol/L-s. How would the rate of this reaction be reported in mol/L-s? A. 0.075 B. 0.10 C.... more

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Chemistry

09/20/22

A reaction has a rate constant of 0.0185 s-1 and the only reactant has an initial concentration of 0.135 M. What is the concentration in molarity of this reactant after 125 seconds?

A reaction has a rate constant of 0.0185 s-1 and the only reactant has an initial concentration of 0.135 M. What is the concentration in molarity of this reactant after 125 seconds? A. 4.84 * 10-5... more

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Chemistry

09/20/22

Which statements below are always true regarding the addition of a catalyst to a reaction:

Which statements below are always true regarding the addition of a catalyst to a reaction: I. the catalyst is in the same state as the reactants II. the catalyst lowers the activation energy in a... more

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Chemistry

09/20/22

Which of the following solutions would have the highest value for boiling point?

Which of the following solutions would have the highest value for boiling point? A. 0.20 M NaCl B. 0.10 M CaCl2 C. 0.50 M CH3OH D. 0.30 M CaCl2 E. 0.10 M CH3COCH3

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Chemistry

09/19/22

Mass of lead deposited of a current 3.7 ampere was passer through a solution of lead 2 chloride for 1 hour 30 minutes

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Chemistry

09/19/22

Find the volume of an aluminum box with the following dimensions

Solve the following. Report your answer with the correct number of significant figures. (6pts) Find the volume of an aluminum box (density 2.70 g/cm3) with the following dimensions: 0.50m long,... more

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Chemistry

09/18/22

composition of substances and solutions

A chemist wants to make 5,748 mL of a solution with a concentration of 2.55 M. How many liters of a 10.40 M solution should be used to make this solution?

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Chemistry

09/18/22

Problem Set Question 4

A molecular compound is composed of 58.8 % Xe, 7.2% O, and 34.0% F, by mass. If the molecular weight is 223 amu, what is the geometry of the compound?

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Math Chemistry

09/18/22

Calculate the wavelength (in nm) of light with the frequency of 4.524 x 10^14 Hz? (Answer to one decimal)

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Math Chemistry

09/18/22

What is the wavelength of light (in nm) emitted from an excited Li^2+ ion in the n=6 state that relaxes into the n=4 state? Answer to one decimal place

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Math Chemistry

09/18/22

Determine the energy difference (in joules) betweeen then=6 and the ground state of a hydrogen atom (answer in 3 sig figs)

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Math Chemistry

09/18/22

What is the difference in energy (in joules) between the n=5 and n=4 states of a hydrogen atom? (answer to 3 sig figs)

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How to find vapor pressure?

chemistry molarity

chemistry molarity

Using the data in the table, determine the rate constant of the reaction

Calculate the wavelength after it undergoes transition

The activation energy for the gas phase isomerization of methyl cis-cinnamate is__________kJ.

One possible mechanism for the gas phase reaction of hydrogen with nitrogen monoxide is:

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:

The gas phase reaction between hydrogen and iodine is proposed to occur as follows:

The pressure inside a container is 812 Torr at a temperature of 75 °C. What would the pressure be at 57 °C?

I'm Stuck. Please Help. (Dimensional Analysis)

what is heavier a 0.3000 kg rock or a 300.0g rock

Provided the following experimental data, determine the correct rate law:

A chemical reaction in the form 2 A --> 3 B, is observed to have the rate of chemical A decrease at 0.15 mol/L-s. How would the rate of this reaction be reported in mol/L-s?

A reaction has a rate constant of 0.0185 s-1 and the only reactant has an initial concentration of 0.135 M. What is the concentration in molarity of this reactant after 125 seconds?

Which statements below are always true regarding the addition of a catalyst to a reaction:

Which of the following solutions would have the highest value for boiling point?

Mass of lead deposited of a current 3.7 ampere was passer through a solution of lead 2 chloride for 1 hour 30 minutes

Find the volume of an aluminum box with the following dimensions

composition of substances and solutions

Problem Set Question 4

Calculate the wavelength (in nm) of light with the frequency of 4.524 x 10^14 Hz? (Answer to one decimal)

What is the wavelength of light (in nm) emitted from an excited Li^2+ ion in the n=6 state that relaxes into the n=4 state? Answer to one decimal place

Determine the energy difference (in joules) betweeen then=6 and the ground state of a hydrogen atom (answer in 3 sig figs)

What is the difference in energy (in joules) between the n=5 and n=4 states of a hydrogen atom? (answer to 3 sig figs)

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